added regext to handle cursor at beginning or end of code as well as inside tags

Michelle Farmerrequested to merge
michfarmerdakno/tinymce-codemirror:additional_regex_tinymce_submit into master

Currently the code pushes the cursor to the beginning if it's inside a script or style tag, this adds three more instances where that will happen:

  1. If cursor is at the beginning of the code. This branch resolves an issue where an empty p tag would be inserted at the beginning in these cases

  2. If cursor is at the end of the code. This branch resolves an issue where an empty p tag would be inserted at the end in these cases.

  3. If cursor is inside a tag. This branch fixes #47 (closed)

Testing

This was tested with Codemirror version 5.56 and TinyMCE 5 (release: 2020-07-08)

Enter some content, play around with cursor positioning, you should no longer get unexpected code or entities if your cursor is at the beginning/end or inside a tag.

The test noted in the issue above should behave properly with this update.

Edited by Michelle Farmer

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